Sl. No.

Topic

No. of  Hours

1.

Traffic stream characteristics:

Introduction to traffic engineering: Road user characteristics, human and vehicle characteristics;

Fundamental parameters and relations of traffic flow: speed, density, volume, travel time, headway, spacing, time-space diagram, time mean speed, space mean speed and their relation, relation between speeds, flow, density, fundamental diagrams;

Traffic stream models: Greenshield’s model, Greenberg’s logarithmic model, Underwood’s exponential model, pipe’s generalized model, multi-regime models;  

Moving observer method: Concepts and derivation, illustration, Calibration of Greenshild’s model.

04

2.

Traffic measurement procedures:

Measurement at a point: Traffic volume measurement, equipment for flow measurements, data analysis, concepts of ADT, AADT;

Measurement over a short section: Speed measurements, 15th and 85th percentile speeds, design speed, speed distributions;  

Measurement along a length of road: Density measurement, travel time measurement;

Automated traffic measurement: GPS devices, loop detectors, video analysis, and other technologies.

04

3.

Microscopic traffic flow modelling:

Car-following models: Concept of stimulus-response, general mottoes models, safety distance, pscho-physical, optimal velocity, fuzzy logic models, and applications;

Lane changing models: Conceptual framework, lane selection model, gap acceptance models;

Vehicle arrival models: Poisson distribution, headway modeling, random vehicle generation;

Microscopic traffic simulation: Vehicle generation, design, calibration, validation, applications, operational models.

04

4.

Macroscopic and mesoscopic traffic flow modelling:

Traffic flow modeling analogies: Fluid flow analogy, heat flow analogy, granular flow, Lighthill-Withams theory, shock waves;

Cell transmission models: Flow conservation, flow transmission;

Traffic progression models: Robertson progression model, platoon movement, dispersion index, applications;

Discrete simulation models: Cellular automata concepts, discretization of time and space, rules for acceleration, deceleration, randomization, and vehicle updation.

04

5.

Uninterrupted flow:

Capacity and Level of service LOS: Definitions, highway capacity, factors affecting LOS, HCM methods;

Urban Street: Classification, operational performance measures, congestion management;

Multilane highways: Characteristics, capacity and level of service;

Freeway operations: Operational considerations, capacity and level of service of a basic freeway segment, weaving operation;

Ramp metering: Merging and diverging areas; gap acceptance, speed at ramps; fixed, reactive, and predictive systems;

Corridor analysis: Segment capacity, free flow travel time, queue delay, transit corridor.

06

6.

Traffic intersection control:

Principles of traffic control: Requirements, basic driving rules, priority movements, principles of traffic control, intersections conflicts;

Traffic signs and road markings: Regulatory, warning, and information signs; longitudinal, transverse, and object marking;

Uncontrolled intersection: Level of service concept, priority streams, confliting traffic, critical gap and follow-up time, capacity, queue length, control delay;

Channelization: channelizing devices, geometrical aspects, turning radius ;

Traffic rotary: Conflict resolution in a rotary, geometric layout, design elements, capacity of rotary;

Grade separated intersection: Road over bridges, under pass, overpass, trumpet interchange, diamond interchange, fully and partial clover leaf intersection.

06

7.

Traffic signal design:

Elements of traffic signal: Definitions, analysis of saturation headway, saturation flow, lost time, critical flows, derivation of cycle length;

Design principles of a traffic signal: Phase design, cycle time determination, green splitting, pedestrian phases, and performance measures;

Evaluation of a traffic signal: Definitions and measurement of stopped and control delay, Webster’s delay model, oversaturated conditions;

Capacity and Los analysis of a signalized I/S: HCM 2000 method of analysis of a signalized intersection and determination of the level of service;

Coordinated traffic signal: Concepts of offset, common cycle length bandwidth, offset for one-way and two way streets ;

Vehicle actuated signals and Area traffic control: Basic principles of vehicle actuation, collection of data, system architecture and algorithms.

06

8.

Specialised traffic studies:

Parking Studies: Parking inventory, statistics, parking surveys; in-out, license palate, on-street and off-street parking ;

Accident Studies: Accident data collection, statistics, safety audit, sfety measures;

Fuel consumption and emission studies: Consumption models, pollutants, air quality models, mitigation measures;

Congestion studies: Performance measures, intensity, duration, extent of congestion, traveler perception, remedial measures, congestion pricing;

Toll operation: Design and configuration, queuing theory, operation and maintenance issues;

Pedestrian studies: Pedestrian counts, pedestrian volume and level of service, design principles of pedestrian facilities;

Intelligent transportation system: Introduction, system architecture, performance evaluation, tools and technologies;

Pedestrian studies: Public transit management system, case studies.

08